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测定钢中锆的比色法有偶氮染料法、酸性三苯甲烷染料法、羟基黄酮光度法、茜素及其衍生物光度法等。一般认为偶氮胂Ⅲ和二甲酚橙是较好的显色剂,其重现性和稳定性较好。稳定时间在24h以上,但从灵敏度上比较,偶氮胂Ⅲ则是当今锆的最灵敏显色剂。 18Ni钢含Mo、Co量较高,如采用二甲酚橙在硫酸介质中显色,则干扰较严重。本文探讨了用盐酸、硝酸溶样,硫酸冒烟,在0.18mol/L硫酸及5.12mol/L硝酸介质中,使偶氮胂Ⅲ与锆形成稳定的绿色络合物。铁、镍、钴不干扰测定,钼的干扰可用
Colorimetric method for the determination of zirconium azo dye method, acid triphenylmethane dye method, hydroxyl flavone spectrophotometry, alizarin and its derivatives spectrophotometry. Is generally believed that arsenazo III and xylenol orange is a better developer, reproducibility and stability is better. Stabilization time in more than 24h, but from the sensitivity comparison, arsenazo Ⅲ is the most sensitive zirconium reagent. 18Ni steel contains Mo, Co amount is higher, such as the use of xylenol orange color medium in sulfuric acid, the more serious interference. In this paper, we discuss the formation of a stable green complex of arsenazo Ⅲ with zirconium in hydrochloric acid, nitric acid and sulfuric acid smoke in 0.18mol / L sulfuric acid and 5.12mol / L nitric acid. Iron, nickel, cobalt does not interfere with the determination of molybdenum interference available